<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="https://unpkg.com/vue@next"></script>
</head>
<body>
    <div id="app">
        <p>{{title}}</p>
        <div v-html = "htmlSpanl"></div>
    </div>

    <script>
        const app = Vue.createApp({
            data(){
                return {
                    title:"hello world",
                    htmlSpanl:'<span style = "color:red">这是一行红色的字</span>'
                }
            }
        })
        app.mount("#app")
    </script>
</body>
</html>